QNAP RAIL-A03-57 Rack Rail Kit
Overview
The RAIL-A03-57 is a standard rack rail kit from QNAP's QNAP storage and networking line, built to seat compatible NAS and server chassis securely in 19-inch two-post or four-post racks. It supports a maximum static load of 57 kg (125.7 lbs) — enough headroom for fully-populated high-bay NAS enclosures loaded with drives, which can easily exceed 40 kg once drives and PSUs are installed. If you're deploying a rack-mounted NAS or storage appliance and need a slide rail solution that handles real-world weight without flex, the RAIL-A03-57 is the appropriate hardware for this install class.
Compatibility
Designed for standard 19-inch rack infrastructure meeting these minimum dimensions: mounting post width ≥ 451 mm (17.8 in) and panel width ≥ 485 mm (19.1 in). Mounting post depth requirement is 22.8 inches — confirm your rack's usable depth before ordering, as shallow two-post open-frame racks may not accommodate the full rail length. This kit is part of the RAIL-A03 series and is intended for use with compatible QNAP NAS and rack-server chassis; verify your specific chassis model against QNAP's rail compatibility list before purchasing, as not all QNAP enclosures accept every rail variant. For integrators deploying rack-mount NVR or storage appliances in security or surveillance infrastructure, check chassis rail-slot type (square, round, or threaded) against your rack's post type — the RAIL-A03-57 targets standard EIA-310 rack environments. Pair with appropriate rack accessories such as cable management arms if slide-out maintenance access is required.
Installation Notes
Minimum mounting post width of 451 mm and panel width of 485 mm are hard requirements — undersized rack posts will prevent proper seating. Confirm post depth accommodates the 22.8-inch rail span before installation. The 57 kg load rating is a static maximum; factor in dynamic loads from drive vibration and rail extension when the chassis is fully extended during maintenance.
